Improvement in patterns for cutting boots



plate A. These movable UNITED STATES PATENT EErcE.

ELIAS SHOPBELL, OF ASHLAND, OHIO.

IMPROVEMENT IN PATTERNS FOR CUTTING BOOTS.

Specification forming part of Letters Patent No. 37,526, dated January27, 1863.

.To all whom z' may concern.:

Be it known that I, ELIAS SHOPBELL, of Ashland, in the county of Ashlandand State of Ohio, have invented new and useful Im- ;provements inPatterns for Cutting Boots;

and I do hereby declare that the following is a full and completedescription of the same, reference being had to the accompanyingdrawings, making part of this specification, in which- Figure 1 is a topview of the pattern contracted to its smallest size. Fig. 2 is a topview of the same extended to its largest size, and Fig. 3 is an edgeview.

The nature ot' my invention relates to the combination of severalplates, of such form and in such a manner that when thus combined form aboot-pattern that can be adjusted at one operation to any required sizeby means of the simultaneous and proportional extension ot' thc severalmovable parts, which are all secured to a center plate by slots, headedpins, and thumb-screw, the width oi' the pa-ttern varying in differentparts as the extension takes place-in other words, varying unequally,for reasons hereinafter stated.

The pattern is composed of seven plates, one of which is stationary andis marked A, the other six being in pairs, as seen at B B', U C', and DD', and are in all respects duplicates of each other, with the singleexception of theirreversed position.

The stationary plate A is seventeen inches long, eight and one-halt'inches wide at the in` step, ve and one-halfinches Wide at the ankle,and six inches wide at the top; but the size may be varied so long asthe same proportions are preserved. Its general outline is shown in Fig.1.

The adjustable platesB B', C C', and D D', when contracted to theirsmallest limits, have their outer margins coincide nearly with theplates are all provided with slots running at various angles in relationto the baseline X X. Headed pins pass through these slots, with oneexceptionthe thumbscrew-and secure the moving pltes to the stationaryplates and to each ot er.

The various angles of the slots govern theproportional extension of themovable plates, and they are so secured to each other as to move only inconcert. The whole are secured in any desired position by a thumb-screw,E. A scale, F, ranging from 1 to 11, marks the size of the pattern.

I will now proceed to describe the position and angle ot' the slots thatwork upon the pins attached to the stationary plate A. Theslots G G' aresituated near the upperand outer corners ot' the'plates B B', and haverespectively an angle upward and outward of thirtyfour degrees, andslide upon the stationaryv pins g g'. The slots H H' are situated at theopposite end ofthe plates B B', and have an angle upward and outward ot'thirty degrees, and slide upon the pins l1, It'. lhe plates C C' haveslots I l' at their upper ends, having their angles downward and outwardten degrees, and move upon the pins i i'. The slots J J' are situated atthe widest part ot' the pattern, and have their inclination ontward anddownward at an angle of seventylive degrees. The plates D D' have slotsK K' at their upper ends, having their angles downward and outward tendegrees. 'Ihey slide upon the thumb-screw E. L' are situated at thelower end or toe of the pattern, and have an angle downward and outwardot' eight degrees, and move upon the pin l.

ln addition to the slots that work upon the stationary pins, as abovedescribed, the-movable plates have other slots which work upon pins inthe corresponding fellow-plate, as follows: At the top of the plate B isa slot, M, situated at rightangles to the line X X, and works upon thepin min the plate B'. At the lower end ot' the plates B B' are slots NN', inclining upward and outward at an angle of three degrees, and slideupon the pins n n' in the plates C C'. The plates D D' have slots O O'situated at the outer angle, and inclining inward toward the toe at anangle of thirty-seven degrees, and slide upon pins o o' in the plates CC'. At the toe of the plate D' is a slot, P, situated at right angles tothe base-line X X, and slides upon the pin p in the plate D.

In extending this pattern from the smallest to the largest size, asmarked upon the scale F, the expansion in diderent parts is unequalthatis, while the instep expands two inches in width, the lower part of theleg or ankle expands but one and one-half inches, and the top of the legone and three-quarters inches7 and in the yvhole length ofthe patternthe extension is tti-*ree and one-half inches. It Will thus be observedthat this disproportional scale of extension is due to the peculiarangles ofthe several slots, and it follows therefrom that a small bootis out proportionally larger in the leg than the larger sizes, and thisdifterence is upon a regular scale-in other words, the plates will moveproportionally so as to give depth to the instep, making the fxont Wideracross the-instep from corner to corner, and leaving the leg smaller inproportion as the boot is cut larger, and in contracting the pattern toboys7 size, the leg is out proportionably larger in the leg than menssizes, which is a necessary condition in order to tit both thejuvenileand mature leg and foot;

their respective angles has been the result of much study andexperiment7 and I believe the results are the production of the mostperfect pattern that has ever been constructed.

I am aware that extension-patterns have been before devised andconstructed, but none that I have ever seen that produce the gradual andproportional changes that are produced in my pattern. rlhese variationsfrom other patterns, though small they may be, are neverthelessimportant; therefore,

What I claim as my improvement, and dcsire to secure by Letters Patent7is- The plate A, in combination with the pairs of plates B B', C Cf, andD D', with their respective slots and angles, producing the simultaneous movement ot the several pairs of plates, and the consequentunequal enlargement and contraction ot' the pattern, substantially asherein set forth.

ELIAS SHOPBELL. Witnesses:

W. H. BURRIDGE, SAMUEL HUFFM'AN.

